- Belzona Polymerics Limited
- BEMO RAIL B.V.
- Bengine Engine Repair & Trading B.V.
- BenLER International Sp. z o.o.
- BEP Bestobell Ltd
- Berdan Civata Sanayi A.S.
- Berg Armaturen Steuerungen GmbH
- Berg Chilling Systems Inc
- BERG PROPULSION AB
- Bergaflex AB
- Bergan Inc, Ian-Conrad
- BESEL SA
- Besenzoni Spa
- BESI Marine Systems GmbH
- Beurteaux (Australia) Pty Ltd
- BEZALIN S.A.
- BFG Marine
- BHDT GmbH
- Bibby Transmissions Ltd
- Billboard Engineering Co Ltd
- Billi Dichtungstechnik GmbH
- BinBir Group
- BIO-SEA
- BIP Industries Co. Ltd
- BIRNS, Inc.
- Bishop Lifting Products, Inc.
- Blew Stoub
- Bloctube Marine Services Ltd
- BLOMMAERT NV
- BLUCHER METAL A/S
- BluVeritas
- Bode GmbH
- Boening Automationstechnologie GmbH & Co KG
- BOGDAD ENTERPRISE
- BOHAMET
- Bold Nu-Tec Insulation Product
- Bolidt Synthetic Products & Systems
- Boll & Kirch Filterbau GmbH
- Bolton Gate Co Ltd
- Bonny Valve Ball Factory
- Bopp & Reuther Messtechnik GmbH
- BOR CHI (SINGAPORE) Pte Ltd.
- BORGER GmbH
- Bowlyg S B Function SRL
- Brauer Ltd
- Breman Shipping Installation
- Brevini Power Transmission S.p.a.
- Bridon Marine Systems & Servic
- Bristol Uniforms Ltd
- Britannia Marine Services
- Brooksbank Valves Limited
- BROTHERS MARINE SERVICES (BMS)
- Brude Safety AS
- BRUSH Turbogenerators
- Brusselle Marine Industries
- BTM Corporate
- Buell Manufacturing Co
- Buffers Marine AB
- Buraaq Lifting & Engineering Co.
- BURAK MARINE
- Burckhardt Compression AG
- BW Technologies Singapore/S.E. Asia
- C & C Technologies
- C'Treat Offshore Waterlink
- C-Nautical B.V.
- C.C.JENSEN A/S
- C.M. HAMMAR
- C.N.S. SYSTEMS AB
- C.SOKA NIGERIA LIMITED
- C2SAT COMMUNICATIONS AB
- CA Clase (UK) Ltd
- Cable Source Pte Ltd
- CAC Industrial Products Ltd
- Cactus 020 Ltd
- CAFFINI PUMPS PARMA
- Calder Ltd (UK)
- Caley Ocean Systems Ltd
- Campbell Scientific Ltd.
- CAN MAKINA ELEKTRIK AS
- Cangzhou Qiancheng Steel-Pipe Co., Ltd.
- Capital Equipment Supply Co Ltd
- Capital Machinery Limited
- Capral Aluminium
- Cargo Care Solutions B.V
- CARGOMAXX
- Cargotec Corporation MacGregor
- CARIBBEAN TRADING Co LLC
- Carlson Filtration Ltd
- CARPENTER Ltd.
- Carwood (Shanghai) Ltd
- CASSENS & PLATH GmbH
- Castrol Marine Ltd
- Caterform Ltd
- CATERPILLAR Inc
- Caterpillar Marine Power Systems
- Caterpillar Propulsion Sweden (previously BERG PROPULSION AB)
- Caterpillar Propulsion Turkey (previously Berg Propulsion Istanbul Makina Ticaret LTH.STI.)
- CATHELCO GROUP
- Cathodic Marine Engineering Pte Ltd
- CBI Engineering AS